Mill-dress



J. W. KANE.

Millstone Dress.

Patented Aug. 10, 1852.

N. PETERS. Pmxo-Litmn her. Wnhm nm 0 C UNITE TATES PATEN FQE.

JOHN \V. KANE, OF NEW CARLISLE, OHIO.

MILL-DRESS.

Specification of Letters Patent No. 9,192, dated August 10, 1852.

To all whom it may concern:

Be it known that I, JOHN IV. KANE, of New Carlisle, in the county ofClark and State of Ohio, have invented a new and useful Mode of DressingMillstones for Grinding Grain, which is described as follows, referencebeing had to the annexed drawings, making part of this specification.

Figure 1 is a plan of a four foot stone showing the furrows and lands.Fig. 2, represents a pattern or board previously prepared by which thelines circumscribing the furrows are laid down upon the face of thestones. Fig. 3, is an edge view of the runner showing the outlets of thefurrows. Fig. 4, is an edge view of the bedstone showing the shallowdress thereon. Fig. 5, represents several of the edges of the lands ofthe bedstone, and a radial line with a supposed edge of the furrow ofthe runner passing over them for the purpose of exhibiting their angleat the points where they pass the radius.

The nature of my invent-ion consists in the application to mill stonesof a dress of a peculiar curvature, all the furrows and lands passingfrom the center in an inflected curve to the verge of the stone, withtheir cutting edges passing during the operation of grinding, a radialline at an equal angle at all the points where they pass the radius fromthe center to the verge of the stone with a depth of furrow in therunner to produce a draft of air of sufficient repulsion to emit theflour sufliciently dry and cool for an immediate separation from thebran.

Having dressed the grinding surfaces of the stones even and true Iprepare a pattern by which I lay down the lines of the furrows. I take aboard in length about equal to the semi-diameter of the stone-say twofeet and in width about 20 inches. The longer side of this board Idivide into twenty four equal spaces of one inch each. The first sixinches are taken for the radius of the eye of the stone as from A to No.1 of Fig. 2. With the dividers open six inches and one leg at A, Iscribe the segment of a circle 1 to F corresponding to a segment of theeye. I next open the dividers twentyfour inches and from the same point-A I scribe the segment 10 to P, corresponding to a segment of thecircumference of the stone. The space between 1 and 10 I divide into 18equal parts-each being 1 inch. The spaces or divisions I number andletter in the manner represented in Fig. 2. From the point- A. I scribethe segments 1, 2, 3, l, 5, 6, 7, 8, 9each 2 inches apart. From theintermediate points lettered a, Z), c, d, e, f, g, h, 2'I draw parallellines. To scribe the segment A, F, I open the dividers 8 inches andplace one leg at No. 2 and scribe the segment A, F. IVith one leg of thecompasses at b and the other at F, I scribe the segment F, G. Then withone leg at No. 8 and the other at G, I scribe the segment G, H. From thepoint 0, I next scribe the segment H, I. Then from the point at, Iscribe the segment I, K. Next from No. 5, scribe the segment K, L. FromNo. 6, draw the curve L, M. From f scribe the line M, N. Fro-1n g, laydown the curve line N, O. From No. 8, draw the line 0, P, and finallyfrom h, scribe the line P, D. This completes the curve line of therequired furrow. The portion of the board A, B, C and D, outside of thiscurve line being removed, the pattern is formed by which the lines ofall the furrows are laid down.

Having divided the circle of the stones into as many equal parts as Idesire to have lands in the dress I place the pattern upon the stonewith the angle A. At the center C and the curved edge at the divisionsof the circle and draw corresponding lines for the lands, until all thelines for the lands are drawn upon the bed and runner exactly alike. Ithen set the compasses on the circle of the stones at those divisions,open of the space of one of the divisions and point ofi a furrow fromeach division until there is a corresponding furrow to every land. Ithen place the pattern upon the stones with the angle A, at the center Cand the curved edge against those last divisions and draw the lines forthe furrows corresponding with those drawn for the lands until all thelines for the furrows are drawn upon the bed and runner exactly alike,so that when placed for grinding, the edges will pass at the re quiredangle from a radial line X, at all the points from the center to theverge, shown by curve M, an edge of the running stone passing overseveral edges of the bed, Fig. 5, to show their angle. I then out theback of the furrows in the bed equally th part of an inch deep from theeye to the verge curving the bottoms up to an edge at the surface ofthelands, as shown at Fig.l

thus bringing the entire surface of the bed up to an operating surfaceupon the grain. I cut the back. of the furrows in the runner from gthsto inch deep next the eye and gths gths of an inch deep at the verge,and of a triangular and curved form, as represented at Fig. 3-being thusshaped to produce a current of air through the furrows of the runner ofsuflicient draft to prevent the stones from being heated and to causethem to emit the flour sufiiciently dry and cool for immediateseparation from the bran, if the grain is in ordinary condition forgrind- In grinding clamp grain or grain containing smut, viscous orforeign matter the furrows in the runner should be from inch to gthsdeep next the eye and gths or one inch deep at the verge, increasing thequantity and draft of air circulated through the stones with the flour,securing it from JOHN W. KANE.

Witnesses:

J OHN L. SMITH, JOHN H. WALTER.

